Creosote-heater.



J. B. KNAPP.

GREOSOTE HEATER.

APPLICATION FILED SEPT. 30, 191

1 052,41 8. Patented Feb. 4, 1913.

JOSEPH IB. KNAPP, OF PORTLAND, OREGON.

CREOSOTE-HEATER.

Specification of Letters Patent.

Patented Feb. 4,1913.

Application filed September 30, 1912. Serial No. 723,225.

(DEDICATED TO THE PUBLIC.)

To all whom it may concern:

Be it known that I, JosErH B. KNAPP, a citizen of the United States, andan employee of the Department of Agriculture of the said United States,residing in the city of Portland, State of Oregon, (whose post-- ofliceaddress is 4:19 Beck Building,) have invented a certain new and usefulImprovement in CreosoteI-Ieaters.

This application is made under the act of March 8, 1883, chapter 1&3 (22Stat, 625) and the invention herein described and claimed may be used bythe Government of the United States or any of its officers or employeesin the prosecution of work for the United States or by any person in theUnited States without the payment of any royalty thereon.

My invention relates to creosote heaters.

The object of my invention is to provide a compact, portable heater,suitable for heating creosote employed in the brush treatment of wood toprevent decay. My apparatus is simple and cheap in construction, can beeasily handled, operated with safety, and conveniently carried fromplace to place. It is intended part-iclarly for use in forest work whereapparatus adapted for heating creosote can not be readily conveyed.

The nature, characteristic features, and scope of my invention will bemore readily understood from the following description, taken inconnection with the accompanying drawing, forming a part hereof,wherein:

Figure 1 is a perspective view of my heater, and Fig. 2 is a sectionalview of the collar forming the heating compartment.

The heater herein described consists of triple detachable parts, namely:a base, a bucket, and a plumbers blow torch.

Referring to the drawing, A represents the base which structurally is inthe form of a frustum of a cone, surmounted by a cylindrical collar, B,made preferably of galvanized iron. The frustum surface of the base, A,is inclosed with a fine wire mesh, C, and is stiffened by ironstandards, D, which are secured at the bottom to a perforated circularsheet iron plate, E, and at the top to an iron ring, F. A galvanizediron door, G, having a plurality of perforations, H, is arranged in theside of the base, A, for admitting the blow torch, 1, into the heatingcompartment.

mounting the frustum portion of the base,

A, is provided with a flat iron ring, J, on which the bucket container,K, rests. This bucket is an ordinary cylindrical galvanized iron pail,having suitable handle and cover. Attached to the bucket, K, are lugs,L, and on the periphery of the ring, J, are a series of slots, M, forthe reception of said lugs when the bucket holding the preservatives isadjusted for heating. This arrangement of the lugs and slots enables theoperator to rapidly detach the bucket at any time by slightly turningit.

The collar, B, forms a heating chamber or compartment with the bucket,K, arranged above, and an asbestos plate, 0, arranged below, which saidplate, 0, is reinforced underneath by a galvanized iron plate, P. Anopening or perforation, Q, is cut in the center of each of said plates,0 and P, to permit the passage of the flame and nozzle of the blowtorch, I.

In operating my invention an ordinary blow torch, modified so as todirect the flame vertically, may be employed as a heating medium. Theflame of such torch can be easily regulatedor controlled so-as to insurea uniform temperature to the preservative or other material in thebucket requiring treatment. The blow pot I," is protected from explosionor other injury due to in tense heat, by the asbestos plate, 0, and thegalvanized iron plate P, of the collar, B, through which the flame isdirected against the bottom of the bucket, K, and by the circulation ofair around the blow torch compartment within the lower chamber.

Having thus described my invention, I claim:

1. In a heater, comprising a base surmounted by a cylindrical collarhaving a ring at its top for the reception of a bucket, a perforatedasbestos plate reinforced with a perforated iron plate disposed at thebase of said collar, and a blow torch for entering said perforatedplates, substantially as specified.

2. In a heater, comprising a base in the form of a frustum of a conehaving a perforated plate at its bottom and its surface inclosed withfine wire mesh, iron standards secured to said base for stiffening saidmesh, a perforated door for affording entrance to said base a collarsurmounting said base ing heat to said compartment, substantially 10having a slotted ring at its top and perfoas specified.

rated asbestos plate reinforced by a per- In testimony whereof, I affixmy signature forated iron plate arranged at its bottom, a in thepresence of two subscribed Witnesses. buc 6t havin lu 's ac aated torest on said ring, said lu gs nterin g the slots of said JOSEPH KNAPP'ring, said collar forming a heating com- WVitnesses:

partnlent, a blow torch for entering said RICHARD H. ROBERTSON,

base and said perforated plates for supply- H. B. OAKLEAF.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. G.

